morrison



No. s|s,79a. Patent ad Dem-27, I898.

A. MORRISON. RDLLING TI E PLATES.

- (Application filed Apr. 1, 1898.) (No Model.) 3 Sheets$heet l.

WITNESSES I INVENTOR A. Monmsou. ROLLING m PLATES.

(Applicatign fllad Apr. 1, 1898.)

No. amass. Patented Dec. 27, I898.

(No Model? 3 Shets-Shaet 2.

F 'yfi F' .8. 4 y f:

2 I wmussses' invsu'ron mm mm UNITED STATES PATENT FFICE.

ANDREI/V MORRISON, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE IDILVVORTH, PORTER & COMPANY, OF SAME PLACE.

ROLLING TIE-PLATES.

SPECIFICATION forming part of Letters Patent No. 616,798, dated December27, 1898.

Application filed April 1, 1898. Serial No. 676,103. (No model.)

To all whom it may concern.-

Be it known that I, ANDREW MORRISON, of Pittsburg, inthe county ofAllegheny and State of Pennsylvania, have invented a new and usefulImprovement in Rolling Tie- Plates, of which the following is a'full,clear, and exact description, reference being had to the accompanyingdrawings, forming part of this specification, in which Figures 1 to 8,inclusive, are diagrammatic views showing the shapes of the successivepasses through which the metal is moved in the rolling of the tie-plateblank, and Figs. 9 and 10 are front elevations of the rolls which I havepreferably employed.

My invention relates to the making of tieplates by rolling along bar ofthe proper crosssection from which the tie-plates are out; and itconsists in an improved set of passes,whereby long flanges or claws maybe rolled along one face of the plate and set in a short distance fromits side edges. I-Ieretofore in the rolling of these bars it has beenfound impossible to produce ribs or claws greater than five-eighths ofan inch in depth, while by my improved system these flanges may berolled of almost any desired depth.

In the drawings, Fig. 1 shows the first pass, wherein the plate 2 isformed with bumps or ribs 3 3 and with outwardly-extending flanges orlips 4 4. In the second and third passes (shown'in-Figs. 2 and 3)theplate is elongated and made thinner both in the body and the lips. Inthe fourth pass (shown in Fig. 4) the lips are bent more nearly to aright-angled position with the body, while in the fifth pass (shown inFig. 5) they are brought to this right-angled position. The body of theplate having been brought to about'the proper thickness in the fifthpass,with the flanges or claws extending from its side edges at rightangles, I then proceed to increase the width of the plate, forcing themetal in the bumps outwardly and upwardly by lateral pressure thereon,so as to widen the plate and at the same time prevent the shortening ofthe flanges. This action is begun in the sixth pass, (shown in Fig. 6,)carried on in the seventh pass, wherein the base portions of the flangesare brought into parallelism, and completed in the eighth pass, (shownin Fig. 8,) wherein the bumps are entirely removed by forcing them intothe body of the plate and into the flanges. I am thus enabled to producea tie-plate bar having the cross-section shown in Fig. 8, with flangesof any desirable depth and set inwardly from the side edges of theplate.

. It will be noted that the metal for widening the plate is obtainedfrom the bumps and that such metal is forced outwardly by lateralpressure. A vertical or flattening pressure may be brought upon thebumps simultaneously with the lateral pressure, if do sired; but thislateral pressure is essential for obtaining the widening of the plateac= cording to my invention. 7

In Figs. 9 and 10 I show one method of ar ranging the collars of therolls to give the desired passes, these passes being shown at a, b, c,d, e, f, g, and h.

The advantages of the invention will be apparent to those skilled in theart, since by it flanges of any desirable width or depth may be formed,whereas these flanges were formerly restricted to a depth of aboutfive-eighths of an inch or less on account of the inability to formlonger flanges during the rolling. The size and contour of the passes,especially that of the first four or five passes, may be varied withoutdeparting from my invention, since I consider myself the first to rollthe tie-plate bar of narrower width than the final bar, with flangesprojecting from its side edges and opposite bumps or ribs, and thenwiden the plate by forcing the metal of the bumps outwardly by lateralpressure into the body and flanges,so as to prevent substantial shortening of the flanges and to extend the plates sidewise beyond theflanges.

- I claim 1. In the rolling of tie-plate bars, rolls hav ing preliminarypasses arranged to form a plate with projecting flanges, and bumps opposite the said flanges, and succeeding passes arranged to presslaterally against the bumps and force them outwardly beyond said flangesto widen the plate; substantially as described.

2. In the rolling of tie-plate bars, rolls hav ing preliminary passesarranged to form lat erally-projecting flanges upon the plate, and bumpsopposite to said flanges, intermedi ate passes arranged to force theflanges into a substantially right-angled position at the loo side edgesof the plate, and final passes arranged to press laterally against thebumps and force them outwardly beyond said flanges to Widen the plate;substantially as described.

3. In the rolling of tie-plate bars, rolls hav ing a set of eightpasses, the first four passes being arranged to reduce the thickness ofthe plate and form angular flanges at its edges, and oppositely-locatedbumps, a fifth pass arranged to straighten the flanges into arightangled position, and the three final passes being arranged to forcethe metal of the bumps into the body of the plate so as to widen itbeyond the flanges and prevent substantially shortening of the flanges,substantially as described.

4. The method of rolling tie-plate bars con= sisting in graduallythinning the plate-body and forming laterally-proj ectin g flanges alongtheside edges, with bumps located opposite thereto, forcing said flangesinto a right-angled position at the edge of the plate and pressinglaterally against the bumps so as to force them outwardly and Widen theplates beyond theflanges; substantially as described.

In testimony whereof Ihave hereunto set my hand.

ANDREW MORRISON.

\Vitnesses:

C. E. MAcKoWN, G. I. HOLDSHIP.

